{"id":65751,"date":"2025-12-20T09:12:07","date_gmt":"2025-12-20T03:42:07","guid":{"rendered":"https:\/\/johnsonfrancis.org\/professional\/?p=65751"},"modified":"2025-12-20T09:12:10","modified_gmt":"2025-12-20T03:42:10","slug":"focused-cardiac-ultrasound-focus-in-the-icu-essential-views-and-interpretation","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/focused-cardiac-ultrasound-focus-in-the-icu-essential-views-and-interpretation\/","title":{"rendered":"Focused Cardiac Ultrasound (FoCUS) in the ICU: Essential Views and Interpretation"},"content":{"rendered":"<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/5Rz-SuUQG80?si=XO8wAkucL468G3Jo\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n\n<p class=\"wp-block-paragraph\">Focused Cardiac Ultrasound (FoCUS) is a simplified, goal-directed point-of-care ultrasound (POCUS) examination performed by ICU clinicians. Unlike a comprehensive echocardiogram, FoCUS is designed to answer specific clinical questions: <em>Is there a tamponade? Is the LV failing? Is the patient fluid-responsive?<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. The 5 Essential Views<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A standard FoCUS exam consists of five primary views. Each provides a unique &#8220;slice&#8221; of the heart to evaluate function and anatomy.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>View<\/strong><\/td><td><strong>Probe Position<\/strong><\/td><td><strong>Key Structures Visible<\/strong><\/td><td><strong>Primary Purpose<\/strong><\/td><\/tr><\/thead><tbody><tr><td><strong>Parasternal Long Axis (PLAX)<\/strong><\/td><td>3rd\u20134th intercostal space (ICS), left of sternum. Marker to R shoulder.<\/td><td>LV, LA, RV (outflow), Aortic &amp; Mitral valves.<\/td><td>Global LV function, aortic root size, pericardial effusion.<\/td><\/tr><tr><td><strong>Parasternal Short Axis (PSAX)<\/strong><\/td><td>Rotate probe 90\u00b0 clockwise from PLAX. Marker to L shoulder.<\/td><td>LV (cross-section), RV.<\/td><td>Regional wall motion, LV &#8220;doughnut&#8221; shape, RV pressure (D-sign).<\/td><\/tr><tr><td><strong>Apical 4-Chamber (A4C)<\/strong><\/td><td>Point of Maximal Impulse (PMI) \/ 5th ICS. Marker to L axilla.<\/td><td>LV, RV, LA, RA, Septum.<\/td><td>Comparing RV vs. LV size, assessing contractility and valvular flow.<\/td><\/tr><tr><td><strong>Subcostal (Subxiphoid)<\/strong><\/td><td>Below xiphoid process, angled toward L shoulder.<\/td><td>All 4 chambers (through the liver).<\/td><td>Best view for <strong>pericardial effusion<\/strong> and tamponade.<\/td><\/tr><tr><td><strong>Inferior Vena Cava (IVC)<\/strong><\/td><td>Subcostal, rotate 90\u00b0 clockwise. Marker toward head.<\/td><td>IVC entering the Right Atrium.<\/td><td>Assessing volume status and fluid responsiveness.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. Interpretation: Key Clinical Findings<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In the ICU, interpretation focuses on &#8220;binary&#8221; or qualitative assessments (e.g., &#8220;Yes&#8221; vs. &#8220;No&#8221;).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Left Ventricular (LV) Function<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\"><strong>Hyperdynamic:<\/strong> LV walls almost touch in systole (&#8220;kissing papillary muscles&#8221;). Often seen in hypovolemia or distributive shock (sepsis).<\/li>\n\n\n\n<li class=\"\"><strong>Severely Depressed:<\/strong> Minimal wall thickening or inward movement. Suggests cardiogenic shock or acute-on-chronic heart failure.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Right Ventricular (RV) Strain<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\"><strong>RV Dilation:<\/strong> Normally, the RV should be &lt; 2\/3 the size of the LV. If the RV is larger than the LV, suspect Pulmonary Embolism (PE) or acute RV failure.<\/li>\n\n\n\n<li class=\"\"><strong>The &#8220;D-Sign&#8221;:<\/strong> In PSAX, if the interventricular septum is flattened (making the LV look like a &#8220;D&#8221; instead of a &#8220;O&#8221;), it indicates RV pressure\/volume overload.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Pericardial Effusion &amp; Tamponade<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\"><strong>Effusion:<\/strong> Anechoic (black) space around the heart.<\/li>\n\n\n\n<li class=\"\"><strong>Tamponade Signs:<\/strong> Right atrial collapse in diastole or right ventricular collapse in early diastole. This is a medical emergency requiring immediate intervention.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Volume Status (IVC Assessment)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\"><strong>Plethoric IVC:<\/strong> (Diameter > 2.1 cm with &lt; 50% collapse) suggests high CVP (fluid overload, tamponade, or RV failure).<\/li>\n\n\n\n<li class=\"\"><strong>Collapsible IVC:<\/strong> (Diameter &lt; 2.1 cm with > 50% collapse) suggests the patient may be fluid-responsive in the setting of shock.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. Integration into ICU Protocols<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">FoCUS is rarely used in isolation. It is typically part of broader diagnostic algorithms:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\"><strong>RUSH Protocol:<\/strong> (Rapid Ultrasound in Shock) \u2013 Evaluates &#8220;The Pump&#8221; (Heart), &#8220;The Tank&#8221; (IVC\/Fluids), and &#8220;The Pipes&#8221; (Aorta\/DVT).<\/li>\n\n\n\n<li class=\"\"><strong>FATE Protocol:<\/strong> (Focus Assessed Transthoracic Echocardiography) \u2013 A systematic approach to rule out the most common causes of circulatory failure.<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Note:<\/strong> FoCUS is a screening tool. If you find significant valvular disease or complex pathology, a formal Comprehensive Echocardiogram by a cardiologist is indicated.<\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Focused Cardiac Ultrasound (FoCUS) is a simplified, goal-directed point-of-care ultrasound (POCUS) examination performed by ICU clinicians. Unlike a comprehensive echocardiogram, FoCUS is designed to answer specific clinical questions: Is there a tamponade? Is the LV failing? Is the patient fluid-responsive? 1. The 5 Essential Views A standard FoCUS exam consists of five primary views. Each [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":65754,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[9],"tags":[],"class_list":["post-65751","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Focused Cardiac Ultrasound (FoCUS) in the ICU: Essential Views and Interpretation - All About Cardiovascular System and Disorders<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/johnsonfrancis.org\/professional\/focused-cardiac-ultrasound-focus-in-the-icu-essential-views-and-interpretation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Focused Cardiac Ultrasound (FoCUS) in the ICU: Essential Views and Interpretation - All About Cardiovascular System and Disorders\" \/>\n<meta property=\"og:description\" content=\"Focused Cardiac Ultrasound (FoCUS) is a simplified, goal-directed point-of-care ultrasound (POCUS) examination performed by ICU clinicians. Unlike a comprehensive echocardiogram, FoCUS is designed to answer specific clinical questions: Is there a tamponade? Is the LV failing? Is the patient fluid-responsive? 1. The 5 Essential Views A standard FoCUS exam consists of five primary views. 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